G.f.: Sum_{n>=0} (n+2)^n * x^n / (1 + (n+2)*x)^n.
A229039
G.f.: Sum_{n>=0} (n+2)^n * x^n / (1 + (n+2)*x)^n.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =24a(4) =108a(5) =600a(6) =3960a(7) =30240a(8) =262080a(9) =2540160a(10) =27216000a(11) =319334400a(12) =4071513600a(13) =56043187200a(14) =828193766400
External references
- oeis: A229039